Horizontal-thrust bearing.



certain new s'rAtrEs PATENT OFFICE.

ALBERT K INGSBURY, or rrmrsiauizent, rENNsY'LvANIA.

HORIZONTAL-'THRUST BEARING,

' l-v Specification of Letters Patent.

To all whom z't may concern: Be it known that I, ALBERT KINGSBURY, a citizen of the United States, and a resident of Pittsburgh,'in the county of Allegheny and State of Pennsylvania, have invented and useful Improvements in Horizontal-Thrust Bearings, of which 4 the following is a specication; reference being had to the accompanying drawings, form- `ing a part thereof.

' My invention relates to fluid lubricated bearings and has special reference to bearings which are adapted tosustain theend thrust of horizontalshafts.

I prefer to embody my invention inv a bearing of the general type shown and de.- scribed in Patent ary th, 1910, on an application filed byme on May 20th, 1907, although I do not intend to limit my invention to any specific structure.

One object of my invention is tosprovide a bearing of the class above indicated that shall embody utomaticvmeans for supplying a flood or bath' of oil or other lubricating lui'd yto the contacting surfaces without resorting to independent pumping devices.

Another object is to provide a th rust4 bearing of the shoe type that shall be adapted jto -sustainlarge horizontal thrust pressures and to automatically establish and maintain an oil film between each of the bearing shoes and its opposed bearing surface.

Other objects will be hereinafter set forthi `oil-chamber. u 1K6, herein-afterv referred to as the cylinder JTPatented Oct. 10, 1916. Application led March 26, 1913.` Serial No. 756,839.'

stituting a removable retaining wall of the l Thefhollow cylindrical bodv 16, has head 2O provided with a central openlng 21 through'which an extension `22 of the -shaft 11 projects.` Mounted on the shaft extension against a shoulder- .23 is a collar 24 which is held against rotation by a spline 25 and has an annular thrust bearing surface 26. v against the shoulder by a sleeve 27 and nutl 28 which is screwedonto the end of the?shaft extension.

N o. 947,242 issued Janu-l I will describe my invention in the following specification and point out the novel features thereof in appended claims.

Referring to the drawings-Figure lris a view in longitudinal section of a bearing constructed in accordance with and embodying my invention. shown in Fig. 2 which is a transverse sectional viewon the line 2-2 of Fig. '1.

10 is a bearing-in which a horizontal shaft l1 is supported. This bearing may be of The same bearing is any suitable structure and since it forms no part of my invention, itis not shown or described in detail.

o 12 is a stationary housing and is providedl with a viiange to which a housing 14 of my improved thrust `bearing is secured by bolts 15. The housi g 14 comprises a hollow cylindrical body 1 6 and a .substantially rectangular oil well 17, a portion of which is integral therewith, an end plate 18 being secured tothe housing bybolts19 and con-.-

51, in order to-forml for the purposeof enhancingthe A011 pump- .yA-n. .annular support or base`ring 30 has a spherically/ curved surface 31 and is seated on anequalizing washer 32 'which' is fitted in`to the end ofthe cylinder| 16 against the head 20. Radial bearing shoes r35 are tiltingly supported in the cylinder 16 vupon the base ring bearing surface 26 jof the collar 24. a Each shoe has a projection 36 which ts loosely into an annular groove 37 of the base ring and a curved' seat 38. =It is thus prevented from rotating on its seat and is free to tilt in operation and assume a slightly. inclined position relative to the the collar. bolts39 which extend loosely through suitable holes in the base ring into the shoes, the holes being countersunk to' admit the heads of the 'bolts and springs 41 being interposed under the heads. The bolts do not prevent the tilting of the shoes.

plug l42 .extends throughthe cylinder wall mto a notch in the base ring, but any other suitable means forpreventing the rotation of the ring may be used. The ring automatically assumes such a position as.r to equalize the'pressure on the shoes.

Secured to the left hand end of the hous-` 30 andare arranged to engage the' and are screwed ing 12 is a partition -which is in the form of a. ring 43 andv loosely surrounds the hub of the collar 24. At the bottom `of the ring 43 a cored passage47 communicates with the oil well 17 at thevbottom and opens into the cylinder at the back of the-thrust collar 2 4. The opening 45 in. the ring 43 isarranged to equalize the the well 17.

The back radialsurface' 50 of the thrust collar may be provided with radial grooves shallow veins or blades,

ing action as hereinafter explained', or prooil level in the housing 12-andv Jeetions may be secured to the surface' 50 65 l The collar is clamped the oil level is maintained I contains only but neither of these to the operation of for the same purpose, expedients is essentiall the bearing.

The walls ofthe cylinder v1G are prefer' yalternately at opposite ends by passages 5lto provide a zigzag or tortuous path for water or other suitable ,cooling liquid, the ends of the holes being closed'by plugs rl`he operation of the bearing is as follows: Assuming that as indicated in the drawings, at, or slightly `above the opening l5 (this level may be mdicated outside'of the housing by an oil column 56 or other suitable means) oil. will be forced, when the shaft 11 and the collar 24 are rotating, radially outward along the surface of the collar 'by reason of the centrifugal forces which act upon it. Thus the oilis forced through a thin annular space 57 into thecylinder 16, iooding thebearing surfaces and filling all the spaces which are provided'betwe'en the shoes I35, betweenthe shoes and the base ring '30, and between the base ring and the equalizing ring The oil is discharged through an annular passage 58 and out of the restricted opening 21 into theoil well 17. Y A small holeV-.LG permits the escape of any air -that might otherwise `accumulate in -the upper part of the cylinder 16. H i

The cooling arrangement is particularly effective in reducing the temperature of the oil since theannular chamber 'is thin and a-small quantity of oilat a time. This Asmall 'quantity of oil is distributed over the relatively large inner surface of'the cylinder 16, the temperature of the cylinder being held at a determined or de- -sired value by the cooling water which is supplied to and discharged from the zigzag passage hereinbefore described, through ble thrust member pipes 59. `Not only efficient by reason of spread over a large is the cooling system the fact that the oil is cooling surface but also because the oil is circulated rapidly over the 5 cooling surface.

The opening 45 may` obviously be closed without `affecting the operation of the bearing but by connecting the oil well 17 to the housing 12, a larger body of oil is available and consequently the oil level is subject to less variation in height.

A check collar 60, shown in broken llines in Fig. 1,'"may lie-mounted on the sleeve 27 if desired.

f Variations in size and arrangement of parts may be effected within the spirit and scope of my invention and I only intend tos lVhat I claim is: l y 1f.' A. thrust bearing comprising a rotatar,y

having a ra dial oil-throwing a .relatively ing surface and a bearing surface, stationary bearing members coperating with the bearing surface of the rotatable member, an annular oil chamber surrounding the bearing members and closely adjacent to the oilthrowing and circumferential .surfaces ofthe rotatable member, and an oil containing reservoir for supplying oil to the oil-throwing surface, said chamber having an outlet near l the axis and adjacent to the stationary beai'- ing members.

A thrust bea ring comprising a rotatable thrust member having a radial oil-throwing surface on one side and a bearing surface on the other, stationary bearing members cooperating with the bearing surface of the r0-` tatable member, an annular oil chamber surrounding the bearing members, closely adjacent to the oil-throwing and circumferential surfaces of the rotary member, and having an inlet opening opposite the oil-throwing surface, and an outlet opening near the axis. 3. A horizontal bearingcoinprising afrotatable thrust collai having an oil-throwing Isurface on one side and a bearing surface on the other, stationary bearing shoes engaging a relatively large proportion o f the bearing surface of the thrust collar, an annular oil chamber surrounding the bearing members, closely adjacent to the'oil-throwing and circumferential surfaces of the 1'0- tary member, and having an inlet opening opposite the oil-throwing surface, andV an outlet opening near the'axis opposite the 4stationary bearing members, whereby oil automatically forced into the chamber through the confined spaces escapes through the outlet opening.

, 4. A' thrust bearing comprising a'rotatable thrust member having a radial oil-throwing near the axis and on the same side of .the \thrust member asthe stationary bearing members, and means adjacent to the restricted circumferential opening.

, 5. A horizontal bearing comprising a ro tatable thrust collar having an oil-throwing surface on one side and a bearing surface on the other, stationary bearing shoes engaglarge proportion of the bearl ing surface of the thrust collar, an annular oil chamber sii'rroundingthe bearing members, closely adjacent to the oil-throwing and for cooling the chamber Y.

circumferentialA surfaces of the rotary inem-Y ber, and having an inlet opening 1n the 4Mchamber opposite the oil-throwing surface,

and an outlet opening near the axis opposite the stationary bearing members, whereby oil my hand this 24th day of March in the year alllltomatically gol-d into the cllilembel'rl` 1913. -t rough the con ne spaces escapes t roug the `outlet openingzend means for .cooling ALBERT KINGSBURY' the chamber adjacent to the restricted cir- Witnesses: `cumfereniiel opening. V M. C. MERz, In witness whereof, I have hereunto set A B.,B. HINEs. 

